Hi GeWa
Many thanks for your work! I've read all four pages.
May I suggest, to be clear, to change one sentence in paragraph 3 in the first page to:
Franz
Many thanks for your work! I've read all four pages.
May I suggest, to be clear, to change one sentence in paragraph 3 in the first page to:
Franz
Hi Franz, have you imagination, how high is inrush current by switching on ? Using for this purpose 6 A relay is " crime "... 😉
What is crime? I am a criminal? You must be joking, but in fact, this is no joke!
First, dear Pavel: you are repeating yourself.
Second: you are acting like a troll. I hope, you have fun yourself, this way.
Franz
Yes Franz, it was joke, but if you take it seriously, so I'm sorry... But using relay at this position isn't good, 'cos inrush current is realy high and contacts " will go away " - look at papers - you can't find it... ( only in connection with " soft start " resistors )....
Don't be offended Franz. We all know that Upupa's heart is in the right place. Because English is not his native language, his choise of words is sometimes a bit misunderstood. But we forgive him 
Regards
Regards
Thanks for the grounding suggestion Franz, I will try that tomorrow.
And also, Upupa has a good point, I destroyed already some relays using this. Maybe some NTC in series with the trafo will better this...
And also, Upupa has a good point, I destroyed already some relays using this. Maybe some NTC in series with the trafo will better this...
I have made a corrected layout of psu board.
the attached is printable pdf file,1:1 600dpi silk layer.
the attached is printable pdf file,1:1 600dpi silk layer.
O.K., Upupa, it was a joke, I accept this.
BTW: can you suggest, how we could limit the inrush current on the Rev 2.0 psu board?
Zang: could you make two holes more, to connect the HV and LV voltage gnd together with a bridge wire?
Kind regards
Franz
BTW: can you suggest, how we could limit the inrush current on the Rev 2.0 psu board?
Zang: could you make two holes more, to connect the HV and LV voltage gnd together with a bridge wire?
Kind regards
Franz
Nordic,
Yes,I am planning to do a REV 2 board with all the fixes.anybody has suggestions please let me know.thanks in advance.
Yes,I am planning to do a REV 2 board with all the fixes.anybody has suggestions please let me know.thanks in advance.
Yes, I would be pleased. But let us communicate over eMail and create a checklist, what should be changed for V2.
Some other points:
- larger caps for the HV part
- inrush current limiting
BTW: I have an offer for ready prepared and drilled enclosures, same as I am using. Quite expensive: sFr. 35.- for one box, about 23 Euro.
So I think: it is not interesting, as the shipping cost out of Switzerland are to high
Franz
Thanks for the summery of corrections to made! Very good work.
Now a little question. When you look at the componentside of the ampboard, you see 2 big holes at the right side of the potmetersilk (no solderpads). Were are they for?
The photo in post 7 shows how there goes 2 thick black wires into it, and at the solderside they are connected with ????, at the other side of the potmeter.
I.m.o. these are not documented connections.
And:
On the photo in post 11 you see 4 blue square markings at the right side of the potmetersilc with the text R in, R gnd, L in and L gnd.
Two of them are switched! (input must be gnd and gnd must be input). You can see it when you follow the traces at the backside of the PCB.
Now a little question. When you look at the componentside of the ampboard, you see 2 big holes at the right side of the potmetersilk (no solderpads). Were are they for?
The photo in post 7 shows how there goes 2 thick black wires into it, and at the solderside they are connected with ????, at the other side of the potmeter.
I.m.o. these are not documented connections.
And:
On the photo in post 11 you see 4 blue square markings at the right side of the potmetersilc with the text R in, R gnd, L in and L gnd.
Two of them are switched! (input must be gnd and gnd must be input). You can see it when you follow the traces at the backside of the PCB.
- Status
- Not open for further replies.